*{
	margin: 0;
 	padding: 0;
 }
 #backG{
 	width: 100%;
 	height: 200px;
 }
 li{
 	width: 100px;
 	height: 40px;
 	border-radius: 10px;
 	line-height: 40px;
 	color: #fff;
 	background: #333;
 	float: left;
 	text-decoration: none;
 	list-style: none;
 	text-align: center;
 	/*padding-left: 20px;*/
 	margin:10px;
 }

	ul li:nth-child(1){
		background:red;
	}
	ul li:nth-child(2){
		background:orange;
	}
	ul li:nth-child(3){
		background:yellow;
	}
	ul li:nth-child(4){
		background:green;
	}
	ul li:nth-child(5){
		background:blue;
	}